公开(公告)号：US11692312B2

公开(公告)日：2023-07-04

申请号：US16627642

申请日：2018-07-02

Applicant: KEMIRA OYJ

Inventor： Marjatta Piironen ,  Iiris Joensuu ,  Lari Vähäsalo

IPC: D21H23/78 ,  D21H21/28

CPC classification number: D21H23/78 ,  D21H21/28

Abstract: A method for monitoring hydrophobic particles contained in a pulp suspension, includes obtaining a sample from a pulp suspension or a filtrate of the pulp suspension. A fluorescent dye is added to the sample to stain particles in the sample. The sample is fractionated to obtain at least a first fraction and a second fraction, wherein the second fraction is a fiber fraction. The method includes for the obtained fractions, fluorescence emitted by the particles in the fractions, calculating an integral of the fluorescence measured for the fractions excluding the fiber fraction, and correlating the calculated integral of the fluorescence to the amount of acetone soluble material in the pulp suspension, and optionally measuring light scattering signal of the particles in at least first and second fractions.

公开(公告)号：US10139330B2

公开(公告)日：2018-11-27

申请号：US14403579

申请日：2013-05-24

Applicant: Kemira Oyj

Inventor： Lari Vähäsalo ,  Eija Saari ,  Iiris Joensuu ,  Marjatta Piironen

IPC: G01N15/06 ,  G01N30/00 ,  G01N15/02 ,  G01N15/00

Abstract: The invention concerns a method and system for analyzing a liquid sample containing solid matter. The method comprises fractionating the sample according to particle sizes and/or masses of the solid matter so as to produce sample fractions, and measuring at least one physical or chemical property of at least one of said sample fractions. According to the invention the sample is conducted to a disintegration channel having one or more depressions, and a liquid flow having a non-constant temporal velocity profile is applied through the disintegration channel, in order to gradually take solid matter of the sample with the liquid flow from said one or more depressions for providing said sample fractions. The invention allows for efficient fractionation of samples, which cannot be fractionated using conventional field flow fractionation, for example.

公开(公告)号：US09970919B2

公开(公告)日：2018-05-15

申请号：US14362135

申请日：2012-11-30

Applicant: Kemira Oyj

Inventor： Pekka Ilmola ,  Kaj Jansson ,  Iiris Joensuu ,  Marjatta Piironen

IPC: G01N33/18 ,  G01N33/487 ,  G01N33/34

CPC classification number: G01N33/1826 ,  G01N33/1806 ,  G01N33/343 ,  G01N33/48735

Abstract: The present invention concerns a method of estimating and optionally controlling the microbiological state in a process stream of an industrial process by measuring the concentration of dissolved oxygen or the rH value, or both, in said stream, the method including continuous or periodic sampling and online measurement. The invention also concerns a device suitable for use in implementing said method.

公开(公告)号：US20160305890A1

公开(公告)日：2016-10-20

申请号：US15038483

申请日：2014-11-18

Applicant: KEMIRA OYJ

Inventor： Lari Vähäsalo ,  Iiris Joensuu ,  Marjatta Piironen

IPC: G01N21/85 ,  G01N33/18 ,  G01N21/31 ,  G01N15/06 ,  G01N21/78 ,  B03B7/00 ,  G01N33/34 ,  G01N21/82 ,  G01N31/22 ,  C09B67/32 ,  D21H23/08 ,  G01N21/59 ,  G01N21/27

CPC classification number: G01N21/85 ,  B03B7/00 ,  C02F1/5209 ,  C09B21/00 ,  C09B67/0075 ,  D21H23/08 ,  D21H23/78 ,  G01N15/06 ,  G01N21/274 ,  G01N21/314 ,  G01N21/59 ,  G01N21/78 ,  G01N21/82 ,  G01N21/83 ,  G01N27/447 ,  G01N31/22 ,  G01N33/182 ,  G01N33/343 ,  G01N2015/0053 ,  G01N2015/0092 ,  G01N2015/0693 ,  G01N2021/3155 ,  G01N2021/7783 ,  G01N2021/8411 ,  G01N2021/8416 ,  G01N2021/8557 ,  G01N2201/127 ,  G01N2201/129

Abstract: The present invention concerns a method of optical measurement of an aqueous stream, and of processing the results of the measurement in order to determine the anionic charge of the stream, the method being carried out by measuring the light absorption of the stream and predicting the amount of anionic groups in the stream using a mathematical processing, such as mathematical calculations. Particularly, the method includes the steps of adding an amount of a cationic dye to the aqueous stream, measuring the light absorption spectra of the obtained dye-containing stream, and processing the obtained light absorption spectrum using said mathematical processing in order to obtain the anionic charge. The invention also concerns the use of the obtained spectrum in determining the turbidity of the stream, as well as a device suitable for use in carrying out the method.

Abstract translation: 本发明涉及一种光学测量水流的方法，并且处理测量结果以确定流的阴离子电荷，该方法通过测量流的光吸收和预测量的量来进行 的阴离子基团使用数学处理，如数学计算。 特别地，该方法包括以下步骤：向含水流中加入一定量的阳离子染料，测量所得含染料流的光吸收光谱，并使用所述数学处理处理所获得的光吸收光谱，以获得阴离子 收费。 本发明还涉及所获得的光谱在确定流的浊度中的用途，以及适用于实施该方法的装置。

公开(公告)号：US20150114094A1

公开(公告)日：2015-04-30

申请号：US14403579

申请日：2013-05-24

Applicant: Kemira Oyj

Inventor： Lari Vähäsalo ,  Eija Saari ,  Iiris Joensuu ,  Marjatta Piironen

IPC: G01N15/06

CPC classification number: G01N15/06 ,  G01N15/0272 ,  G01N30/0005 ,  G01N2015/0053 ,  G01N2015/0288

Abstract: The invention concerns a method and system for analyzing a liquid sample containing solid matter. The method comprises fractionating the sample according to particle sizes and/or masses of the solid matter so as to produce sample fractions, and measuring at least one physical or chemical property of at least one of said sample fractions. According to the invention the sample is conducted to a disintegration channel having one or more depressions, and a liquid flow having a non-constant temporal velocity profile is applied through the disintegration channel, in order to gradually take solid matter of the sample with the liquid flow from said one or more depressions for providing said sample fractions. The invention allows for efficient fractionation of samples, which cannot be fractionated using conventional field flow fractionation, for example.

Abstract translation: 本发明涉及用于分析含有固体物质的液体样品的方法和系统。 该方法包括根据固体物质的粒度和/或质量对样品进行分级，以产生样品级分，并测量至少一种所述样品级分的至少一种物理或化学性质。 根据本发明，将样品传导到具有一个或多个凹陷的分解通道，并且通过崩解通道施加具有非恒定时间速度分布的液体流，以便逐渐用液体取样品的固体物质 从所述一个或多个凹陷流出以提供所述样品级分。 本发明允许有效分级样品，其不能使用例如常规场流分馏法分馏。